Home / 128,613.46-177,493.95-72,024.34

Finding the Fourth Proportional to 128,613.46, 177,493.95 and 72,024.34

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Solution

The fourth proportional to 128,613.46, 177,493.95 and 72,024.34 is: 99,397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,613.46 : 177,493.95 = 72,024.34 : x
  2. Step 2: Convert to fraction form
    128,613.46/177,493.95 = 72,024.34/x
  3. Step 3: Cross multiply
    128,613.46x = 177,493.95 × 72,024.34
  4. Step 4: Simplify right side
    128,613.46x = 12,783,884,602.74
  5. Step 5: Solve for x
    x = 12,783,884,602.74/128,613.46
  6. Step 6: Final answer
    x = 99,397.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.